Biological Classification And System Of Classification Question 519
Question: During conjugation in Paramecium [BHU 1999; Pb. PMT 2004]
Options:
A) Out of the four micronuclei formed, three degenerate
B) Out of the twelve macronuclei formed, four degenerate
C) Zygote nucleus undergoes eight successive divisions in each conjugant
D) Out of the sixteen nuclei formed from zygote, 12 become macronuclei and 4 remain as micronuclei
Show Answer
Answer:
Correct Answer: A
Solution:
The diploid micronucleus of each conjugant divides by meiosis.
Thus, 4 haploid daughter micronuclei are produced, of which 3 degenerate in each conjugant, while the remaining one divides by mitosis to form 2 unequal pronuclei.
BETA
